由于预定义的标点字符类不适用于字符串的末尾，因此使用自定义字符类代替。故意留下点。单独添加单引号（因为转义它不起作用并且在这种情况下可能很难为 q 运算符找到正确的字符）。自行添加右方括号，因为 Oracle 在转义时似乎无法正确处理它。最后显式添加尾随的连续点：
WITH T (id, col) AS (
SELECT 1, 'GEORGE & SON ' FROM DUAL UNION ALL
SELECT 2, '-GEORGE & SON' FROM DUAL UNION ALL
SELECT 3, '&GEORGE & SON' FROM DUAL UNION ALL
SELECT 4, 'GEORGE & SON..' FROM DUAL UNION ALL
SELECT 5, 'GEORGE & SON.' FROM DUAL UNION ALL
SELECT 6, '-GEORGE & SON S.A.' FROM DUAL UNION ALL
SELECT 7, 'GEORGE & SON!' FROM DUAL UNION ALL
SELECT 8, 'GEORGE & SON"' FROM DUAL UNION ALL
SELECT 9, 'GEORGE & SON#' FROM DUAL UNION ALL
SELECT 10, 'GEORGE & SON$' FROM DUAL UNION ALL
SELECT 11, 'GEORGE & SON%' FROM DUAL UNION ALL
SELECT 12, 'GEORGE & SON&' FROM DUAL UNION ALL
SELECT 13, 'GEORGE & SON(' FROM DUAL UNION ALL
SELECT 14, 'GEORGE & SON)' FROM DUAL UNION ALL
SELECT 15, 'GEORGE & SON*' FROM DUAL UNION ALL
SELECT 16, 'GEORGE & SON+' FROM DUAL UNION ALL
SELECT 17, 'GEORGE & SON,' FROM DUAL UNION ALL
SELECT 18, 'GEORGE & SON\' FROM DUAL UNION ALL
SELECT 19, 'GEORGE & SON-' FROM DUAL UNION ALL
SELECT 20, 'GEORGE & SON\' FROM DUAL UNION ALL
SELECT 21, 'GEORGE & SON/' FROM DUAL UNION ALL
SELECT 22, 'GEORGE & SON:' FROM DUAL UNION ALL
SELECT 23, 'GEORGE & SON;' FROM DUAL UNION ALL
SELECT 24, 'GEORGE & SON<' FROM DUAL UNION ALL
SELECT 25, 'GEORGE & SON=' FROM DUAL UNION ALL
SELECT 26, 'GEORGE & SON>' FROM DUAL UNION ALL
SELECT 27, 'GEORGE & SON?' FROM DUAL UNION ALL
SELECT 28, 'GEORGE & SON@' FROM DUAL UNION ALL
SELECT 29, 'GEORGE & SON[' FROM DUAL UNION ALL
SELECT 30, 'GEORGE & SON^' FROM DUAL UNION ALL
SELECT 31, 'GEORGE & SON_' FROM DUAL UNION ALL
SELECT 32, 'GEORGE & SON`' FROM DUAL UNION ALL
SELECT 33, 'GEORGE & SON{' FROM DUAL UNION ALL
SELECT 34, 'GEORGE & SON|' FROM DUAL UNION ALL
SELECT 35, 'GEORGE & SON}' FROM DUAL UNION ALL
SELECT 36, 'GEORGE & SON~' FROM DUAL UNION ALL
SELECT 37, 'GEORGE & SON''' FROM DUAL UNION ALL
SELECT 38, 'GEORGE & SON]' FROM DUAL)
SELECT
* FROM T
WHERE REGEXP_LIKE(col, '(^[[:punct:]]|[-!"#$%&()*+,\/:;<=>?@[^_`{|}~' || '''' || ']$)|]$|\.\.$|(^[[:space:]]|[[:space:]]$)')
ORDER BY id
;
更新要求
标点后跟一个点
为特殊字符集添加一个可选的点；来自
'[-!"#$%&()*+,\/:;<=>?@[^_`{|}~' || '''' || ']$'
到
'[-!"#$%&()*+,\/:;<=>?@[^_`{|}~' || '''' || ']\.?$'
如
WITH T (id, col) AS (
SELECT 40, 'GEORGE & SON^.'FROM DUAL UNION ALL
SELECT 41, 'GEORGE & SON_.'FROM DUAL UNION ALL
SELECT 42, 'GEORGE & SON`.'FROM DUAL UNION ALL
SELECT 43, 'GEORGE & SON{.'FROM DUAL UNION ALL
SELECT 44, 'GEORGE & SON|.'FROM DUAL UNION ALL
SELECT 45, 'GEORGE & SON}.'FROM DUAL UNION ALL
SELECT 46, 'GEORGE & SON~.'FROM DUAL UNION ALL
SELECT 47, 'GEORGE & SON''.'FROM DUAL UNION ALL
SELECT 48, 'GEORGE & SON].'FROM DUAL)
SELECT
* FROM T
WHERE REGEXP_LIKE(col, '([-!"#$%&()*+,\/:;<=>?@[^_`{|}~' || '''' || ']\.?$)|]\.?$')
ORDER BY id
;
字符串中空格和特殊字符（组合）的重复
最初，只要求出现前导和尾随事件……;-)
两个或多个空格/标点字符的序列被
捕获
[[:space:][:punct:]]{2,}
如果你想在字符串中明确地使用它，只需 - 用单词字符包围它们：
\w[[:space:][:punct:]]{2,}\w
当找到单个空格时，前导/尾随连续空格已经匹配 - 无需明确担心它们。
这给出了：
WITH T (id, col) AS (
SELECT 50, 'GEORGE & SON ' FROM DUAL UNION ALL
SELECT 51, 'GEORGE & SON ' FROM DUAL UNION ALL
SELECT 52, ' GEORGE & SON' FROM DUAL UNION ALL
SELECT 53, ' GEORGE & SON' FROM DUAL UNION ALL
SELECT 54, 'GEORGE & SON' FROM DUAL UNION ALL
SELECT 55, 'GEORGE & SON S.A.' FROM DUAL UNION ALL
SELECT 56, 'GEORGE & SON S.A.' FROM DUAL UNION ALL
SELECT 60, ' GEORGE and SON' FROM DUAL UNION ALL
SELECT 61, ' ,GEORGE and SON' FROM DUAL UNION ALL
SELECT 62, ', GEORGE and SON' FROM DUAL UNION ALL
SELECT 63, 'GEORGE -- SON' FROM DUAL UNION ALL
SELECT 64, 'GEORGE --SON' FROM DUAL UNION ALL
SELECT 65, 'GEORGE & SON' FROM DUAL UNION ALL
SELECT 66, 'GEORGE + SON' FROM DUAL UNION ALL
SELECT 67, 'GEORGE and , SON' FROM DUAL UNION ALL
SELECT 68, 'GEORGE and , SON' FROM DUAL UNION ALL
SELECT 69, 'GEORGE and SON ,' FROM DUAL UNION ALL
SELECT 70, 'GEORGE and SON. ' FROM DUAL UNION ALL
SELECT 71, 'GEORGE and+-SON' FROM DUAL)
SELECT
* FROM T
-- WHERE REGEXP_LIKE(col, '(^[[:punct:]]|[-!"#$%&()*+,\/:;<=>?@[^_`{|}~' || '''' || ']\.?$)|]$|\.\.$|(^[[:space:]]|[[:space:]]$)|[[:space:][:punct:]]{2,}')
WHERE REGEXP_LIKE(col, '(^[[:punct:]]|[-!"#$%&()*+,\/:;<=>?@[^_`{|}~' || '''' || ']\.?$)|]$|\.\.$|(^[[:space:]]|[[:space:]]$)|\w[[:space:][:punct:]]{2,}\w')
ORDER BY id
;
但是这会产生误报，最突出的是GEORGE & SON。在某种程度上，可以通过将 [:punct:] 替换为包含较少的集合来避免这种情况。 （最终）选择将取决于更令人担忧的是假阴性还是假阳性。
查看实际操作：
捕获任意序列的标点符号和空格字符 - 但允许单个字母后跟一个点和一个空格
如前所述，误报需要与误报相平衡。一种方式或另一种方式。
然而，这可能是考虑将整体问题分解为更小的问题并单独处理它们的好时机。即使 GEORGE and P. SON 是完全可以接受的，您也可能想要查看，例如 -GEORGE and P. SON。因此，让我们专注于字符串中间的杂散字符序列 - 甚至记住之前的 ** 和 **，并允许枚举（因此允许使用逗号）：
WHERE
REGEXP_LIKE(col, '\w[[:space:][:punct:]]{2,}\w')
AND
NOT REGEXP_LIKE(col, ' [[:upper:]]\. \w')
AND
NOT INSTR(col, ', ') > 0
AND
NOT INSTR(col, ' & ') > 0
可能紧随其后
WHERE
REGEXP_LIKE(col, '\w[[:space:][:punct:]]{2,}\w')
AND
(REGEXP_LIKE(col, ' [[:upper:]]\. \w')
OR
INSTR(col, ', ') > 0
OR
INSTR(col, ' & ') > 0
)
为了在许多有效的之间找到例如 GEORGE 和 , SON。 INSTR 可能比 REGEX 更快 - 取决于整体情况……
关于机制的更多信息
(i) [[:punct:][:space:]] 本质上结合了 [[:punct:]] 和 [[:space: ]] 到单个字符类中。就该类的选择而言，顺序无关紧要。
(ii)
[-!"#$%&()*+,\/:;<=>?@[^_`{|}~' || '''' || ']
是
[-!"#$%&()*+,\/:;<=>?@[^_`{|}~]
添加了单引号。如果直接尝试，Oracle 会考虑使用单引号来结束参数值。并且用反斜杠转义单引号不起作用......所以基本上，这就是上面所说的“单独添加单引号”。
如果需要调整/进一步详细信息，请发表评论。